package com.wsb.servlet;

import com.wsb.entry.SubmsUser;
import com.wsb.service.HomeService;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;

public class HomeServlet   extends HttpServlet {

    //推到推理出
    //写web 项目功能  退出登录，删除用户，修改改用，修改密码
    //1.连接数据库，操作数据，对数据的增删改查    dao层
    //2.对数据返回的数据，进行处理。            service
    //3.跳转页面                             servlet  表现层
    // 数据载体，实体类
    //分层概念
    //web页面===>servlet ===>service ===>dao ===>mysqldb
    //web页面<===servlet <====service<====dao<===


    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        this.doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //组织准备数据的代码写这里
        //第一步，加载驱动
        HomeService homeService =new HomeService();
        List<SubmsUser>  submsUserLIst =homeService.getSmbmsAll();
        HttpSession session= req.getSession();
        session.setAttribute("smbmsUserList",submsUserLIst);
        resp.sendRedirect("home.jsp");
    }

}
